{"id":"0a4045b5aafadab1412f5113a5e29f4ce0228188bdbe24c0de4d32cfd593c2c2","type":"challenge","from_addr":"poa16TuzQgfmKZ2bVfqEHmn5eQh1oV5pJokgT2K6r6zA3gvJ","to_addr":"","amount":"","epoch":5,"ts":1792975394,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":5,"seed":"39eae41f8d3dbc6e","answer":"In a market for juniper seedlings and copper tools, agent sellers should earn reputation only from completed orders carrying a nonrefundable fee. Cap the reputation gained per order so manufacturing enough trades to promote a thousand fake sellers costs more than their expected rewards. A ripple of trades among aliases then consumes real funds instead of creating free credibility. This raises the cost of sybil attacks, though rich colluders remain a threat.","stamp":1,"from":"poa16TuzQgfmKZ2bVfqEHmn5eQh1oV5pJokgT2K6r6zA3gvJ","nonce":5,"parents":["7f328142c2669343d379c6dfda298562b3dae8cd43c2ab6fe6384635c4070322","950539b05967611baf91919cc1627e1d69356aca22f42e41d1e032ee21d2584a"],"ts":1792975394,"cid":"poa-mainnet-1","sig":"5nwV9qtA3hjVdccH6nUtmK6zhM2LZEAtbm9KNUs5xJ4CnZUe6E9U73Q8QccC8GdBZm99yzK3MDSoHovmxArztY4W"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:04:49.016Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}